The National Weather Service issued a hazardous weather outlook for Southern California, warning people vulnerable to the heat to stay indoors or in air-conditioned buildings. Sailors far off shore were expected to have gale-force winds to contend with.

Cities across L.A. County were on the brink of breaking heat records.

"Today is going to be very close to yesterday," when record-high temperatures baked Burbank and Lancaster, among other cities, National Weather Service meteorologist Dave Bruno said.

Burbank’s record of 103 and Woodland Hills' 104-degree record could both be topped Monday, forecasters said. Temperatures were expected to climb to between 98 and 104 in the valleys, Bruno said.

It's expected to be up to 10 degrees cooler along the coasts, he said.

Though the weather is extremely dry and hot, a lack of wind means that Southern California won’t see any red-flag fire warnings Monday. However, the danger of fire remains high, Bruno said.

The heat wave is expected to break later Monday, forecasters said, with temperatures gradually dropping off through the rest of the week.